Jennifer Duffy , APN-CNP
Nurse Practitioner • Elmhurst, IL
155 E Brush Hill Rd
Elmhurst, IL 601265658
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on November 14, 2011; this date does not establish years in practice.
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Published CMS data list 220 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99214 — Established patient outpatient office visit: 140 service units.
- 99215 — Established patient outpatient office visit: 49 service units.
- 99205 — New patient outpatient office visit: 18 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 4 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 538 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) — 139 prescription fills, including refills.
- Morphine Sulfate Er (Morphine Sulfate) — 108 prescription fills, including refills.
- Morphine Sulfate — 53 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 13 records in the table · Guide: How to read Medicare Part D prescriber data
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Close to the middle for Medicare Part B services among clinicians listed under Nurse Practitioner in Elmhurst, IL (2024, 43 clinicians with data). Median for this group: 294. Middle half: 127 to 429.
Close to the middle for Medicare Part B services among clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: 261. Middle half: 101 to 526.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 231 in 2020 to 220 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
155 E Brush Hill Rd
Elmhurst, IL 601265658
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Endeavor Health Medical Group. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2011
What Public CMS Data Show
Nurse Practitioner: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
94 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $22,203 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $17,637 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
553 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$12,530 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $537.12 across 20 records.
By nature of payment
- Food and Beverage: $537.12 across 20 records.
Reporting-company totals (3 largest of 12)
- Merck Sharp & Dohme LLC: $81.85 across 3 records.
- Genentech, Inc.: $76.09 across 3 records.
- JAZZ PHARMACEUTICALS INC.: $73.04 across 2 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
15 years (graduated 2011)
CMS Doctors and Clinicians data list 2011 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2011
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Jennifer Duffy has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Jennifer Duffy as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Elmhurst and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Nurse Practitioner in Elmhurst, IL (2024, 43 clinicians with data). Median for this group: 294. Middle half: 127 to 429.
Close to the middle for clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: 261. Middle half: 101 to 526.
Medicare-allowed amount
Close to the middle for clinicians listed under Nurse Practitioner in Elmhurst, IL (2024, 43 clinicians with data). Median for this group: $23,401. Middle half: $10,385 to $37,576.
Close to the middle for clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: $21,010. Middle half: $8,652 to $42,014.
Paid by Medicare
Close to the middle for clinicians listed under Nurse Practitioner in Elmhurst, IL (2024, 43 clinicians with data). Median for this group: $17,878. Middle half: $7,378 to $28,350.
Close to the middle for clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: $15,151. Middle half: $6,396 to $31,322.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Nurse Practitioner in Elmhurst, IL (2024, 32 clinicians with data). Median for this group: 240. Middle half: 87 to 701.
More Part D prescriptions than 60% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,572 clinicians with data). Median for this group: 259. Middle half: 80 to 930.
Part D drug cost
Close to the middle for clinicians listed under Nurse Practitioner in Elmhurst, IL (2024, 32 clinicians with data). Median for this group: $9,232. Middle half: $995 to $43,661.
Close to the middle for clinicians listed under Nurse Practitioner in Illinois (2024, 2,572 clinicians with data). Median for this group: $10,867. Middle half: $976 to $113,945.
68 active clinicians are listed under Nurse Practitioner with a practice address in Elmhurst, IL (4,894 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Elmhurst
22.1% of these 68 clinicians have the CMS telehealth indicator.
67.6% of these 68 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services stayed about the same: 231 in 2020 and 220 in 2024.
- 2020: 231
- 2021: 265
- 2022: 261
- 2023: 258
- 2024: 220
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Medicare-allowed amount
Medicare-allowed amount increased 15% from $19,328 in 2020 to $22,203 in 2024.
- 2020: $19,328
- 2021: $28,466
- 2022: $28,933
- 2023: $24,730
- 2024: $22,203
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Paid by Medicare
Paid by Medicare increased 19% from $14,792 in 2020 to $17,637 in 2024.
- 2020: $14,792
- 2021: $22,047
- 2022: $22,070
- 2023: $18,975
- 2024: $17,637
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 105% from 263 in 2020 to 538 in 2024.
- 2020: 263
- 2021: 302
- 2022: 436
- 2023: 453
- 2024: 538
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30-day fills
30-day fills increased 103% from 273 in 2020 to 553 in 2024.
- 2020: 273
- 2021: 312
- 2022: 444
- 2023: 457
- 2024: 553
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Part D drug cost
Part D drug cost decreased 15% from $14,677 in 2020 to $12,530 in 2024.
- 2020: $14,677
- 2021: $14,368
- 2022: $19,088
- 2023: $21,646
- 2024: $12,530
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $156.10 in 2021 to $537.12 in 2025.
- 2021: $156.10
- 2022: $71.08
- 2023: $85.87
- 2024: $249.22
- 2025: $537.12
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): 20 records totaling $537.12.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| JAZZ PHARMACEUTICALS INC. |
Food and Beverage
In-kind items and services
|
ZIIHERA | General | $38.38 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
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TECVAYLI | General | $36.41 |
| JAZZ PHARMACEUTICALS INC. |
Food and Beverage
In-kind items and services
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ZEPZELCA | General | $34.66 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
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KEYTRUDA | General | $32.26 |
| Regeneron Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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LIBTAYO | General | $28.72 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
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PADCEV | General | $28.72 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
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LUTATHERA | General | $27.74 |
| Daiichi Sankyo Inc. |
Food and Beverage
In-kind items and services
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Enhertu | General | $27.74 |
| Genentech, Inc. |
Food and Beverage
In-kind items and services
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Tecentriq | General | $27.47 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
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— | General | $27.45 |
| Genentech, Inc. |
Food and Beverage
In-kind items and services
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Tecentriq Hybreza | General | $26.87 |
| Incyte Corporation |
Food and Beverage
Cash or cash equivalent
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JAKAFI | General | $26.44 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
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KEYTRUDA | General | $26.26 |
| Daiichi Sankyo Inc. |
Food and Beverage
In-kind items and services
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DATROWAY | General | $25.62 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
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KEYTRUDA | General | $23.33 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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EPKINLY | General | $23.00 |
| Genentech, Inc. |
Food and Beverage
In-kind items and services
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Itovebi | General | $21.75 |
| Ipsen Biopharmaceuticals, Inc |
Food and Beverage
In-kind items and services
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Onivyde | General | $20.00 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
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TALVEY | General | $17.85 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
|
KISQALI | General | $16.45 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2017–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2018–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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140 | 60 | $278.00 | $86.93 |
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99215
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
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49 | 39 | $394.00 | $129.14 |
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99205
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
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18 | 18 | $486.00 | $163.43 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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13 | 11 | $200.00 | $58.70 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 139 | 1,940 | $3,188.31 | 51 |
| Morphine Sulfate Er | Morphine Sulfate | 108 | 3,030 | $3,516.31 | 31 |
| Morphine Sulfate | Morphine Sulfate | 53 | 959 | $1,886.10 | 14 |
| Gabapentin | Gabapentin | 42 | 1,500 | $327.73 | 17 |
| Tramadol Hcl | Tramadol Hcl | 42 | 588 | $223.76 | 18 |
| Oxycodone Hcl | Oxycodone Hcl | 28 | 387 | $413.95 | 11 |
| Fentanyl | Fentanyl | 26 | 585 | $1,870.06 | — |
| Mirtazapine | Mirtazapine | 20 | 770 | $204.49 | 11 |
| Ondansetron Hcl | Ondansetron Hcl | 20 | 425 | $282.68 | 13 |
| Hydromorphone Hcl | Hydromorphone Hcl | 19 | 213 | $245.89 | — |
| Clonazepam | Clonazepam | 17 | 495 | $113.07 | — |
| Lorazepam | Lorazepam | 13 | 405 | $96.02 | — |
| Ondansetron Odt | Ondansetron | 11 | 167 | $161.68 | — |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2026-04-06NUCC Taxonomy Code: 363L00000X
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
NUCC Taxonomy Code: 363LF0000X
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20111222000384
IL
6406022466
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Endeavor Health Medical Group
2650 Ridge Ave, Evanston, IL 602011700
Endeavor Health Medical Group
155 E Brush Hill Rd, Elmhurst, IL 601265658
Phone: 3312210096
Endeavor Health Medical Group
177 E Brush Hill Rd, Elmhurst, IL 601265658
Phone: 6306466020
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner
APNCNP
Internal Medicine - Hematology & Oncology
Doctor of Medicine (M.D.)
Nurse Practitioner
APNCNP
Nurse Practitioner
APNCNP
Physician Assistant
Physician Assistant (Certified)
Internal Medicine - Hematology & Oncology
Doctor of Osteopathic Medicine (D.O.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Recorded as JENNIFER DUFFY, APN-CNP
Registered at 155 E BRUSH HILL RD, ELMHURST, IL 601265658 (Tel: 6306462273)
Recorded as JENNIFER DUFFY, DNP, FNP-BC
NPI status registered as active in NPPES database
Registered at 1950 N HARLEM AVE, ELMWOOD PARK, IL 607073717 (Tel: 7084536800)
Registered at 2518 ELM ST, RIVER GROVE, IL 601711617 (Tel: 7084043833)
Recorded as JENNIFER DUFFY, FNP
Nurse Practitioner (license number reported to NPPES: IL 209.009133)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Nurse Practitioners in Elmhurst
- Ashley Lupo, APN-CNP
- Faith Almieri, APN
- Dr. Kelly Morris, DNP
- Michael Dynkowski, APN-CNP
- Carrie Daly, APN
- Kristine Montero Nichols, APN-CNP
Mailing Address
2518 Elm St
River Grove, IL 601711617
Phone: 7084043833